Mark502inf,
Look all the way to the bottom of your reference, the Global Security web-site page. Check the table "Air Defence Command, Inventory". All those wicked AAA and SAM systems known in inventory have a number or + associated with them, except the SA-16. The SA-16 has ?. The ?s go all the way across to the present. I challenge you to find any credible source that unequivocally states SA-16s were in Iraq during Operation Desert Storm, or for that matter, the beginning of Operation Iraqi Freedom.
You should find numerous .mil and .gov references to other SAMs and AAA in arsenal or actually engaging US and coalition aircraft from the period of Operation DESERT STORM through Operation PROVIDE COMFORT (OPC), OPC II, Operation DESERT STRIKE, Operation DESERT FOX, Operation SOUTHERN WATCH and the clearly described blow-by-blow Operation NORTHERN WATCH engagements, and into Operation IRAQI FREEDOM. Please notify us all when you find one that lists SA-13 in Iraq directly, without using an intermediate source. You cannot find what was not there.